They are brilliant. Like every brilliant product they are also Very simple. but you just have to get the idea first
1) No holes in coin door
2) nothing is permanent
3) they hook up easy on the inside of the door, no damage, no chance of getting loose when door is locked
4) metal adjustable for various thickness of metal used for door
5) hardly any visible wires
7) everybody understands them
They serve us very well during Eurocades and some of my machines mysteriously still have them......
I just removed one from the Asterock because I now succesfully installed the free play hack....
